<!--SIF Implementation Specification 2.2-6 (March 17, 2008)-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" targetNamespace="http://www.sifinfo.org/infrastructure/2.x" xmlns:sif="http://www.sifinfo.org/infrastructure/2.x" elementFormDefault="qualified">
  <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="imports/xml/xml.xsd" />
  <xs:complexType name="StudentResponseSetType">
    <xs:sequence>
      <xs:element name="Items">
        <xs:complexType>
          <xs:sequence>
            <xs:element name="Item" minOccurs="0" maxOccurs="unbounded">
              <xs:complexType>
                <xs:sequence>
                  <xs:element name="Response" type="xs:string" />
                  <xs:element name="ResponseLocation" minOccurs="0" nillable="true" type="xs:anyURI" />
                  <xs:element name="ResponseStatus" minOccurs="0" nillable="true">
                    <xs:simpleType>
                      <xs:restriction base="xs:token">
                        <xs:enumeration value="Correct" />
                        <xs:enumeration value="Incorrect" />
                        <xs:enumeration value="Complete" />
                        <xs:enumeration value="PartiallyComplete" />
                        <xs:enumeration value="Viewed" />
                        <xs:enumeration value="NotViewed" />
                        <xs:enumeration value="NotAnswered" />
                        <xs:enumeration value="Attempted" />
                        <xs:enumeration value="Incomplete" />
                      </xs:restriction>
                    </xs:simpleType>
                  </xs:element>
                  <xs:element name="ResponseTime" minOccurs="0" nillable="true" type="xs:duration" />
                  <xs:element name="ItemNumber" minOccurs="0" nillable="true" type="xs:token" />
                  <xs:element name="ItemName" minOccurs="0" nillable="true" type="xs:token" />
                  <xs:element name="DiagnosticStatement" minOccurs="0" nillable="true" type="xs:string" />
                  <xs:element name="NumberOfAttempts" minOccurs="0" nillable="true" type="xs:unsignedInt" />
                </xs:sequence>
                <xs:attribute name="AssessmentItemRefId" use="optional" type="sif:IdRefType" />
              </xs:complexType>
            </xs:element>
          </xs:sequence>
        </xs:complexType>
      </xs:element>
      <xs:element name="SIF_Metadata" minOccurs="0" nillable="true" type="sif:SIF_MetadataType" />
      <xs:element name="SIF_ExtendedElements" minOccurs="0" nillable="true" type="sif:SIF_ExtendedElementsType" />
    </xs:sequence>
    <xs:attribute name="RefId" use="required" type="sif:RefIdType" />
    <xs:attribute name="AssessmentAdministrationRefId" use="required" type="sif:IdRefType" />
    <xs:attribute name="StudentPersonalRefId" use="required" type="sif:IdRefType" />
    <xs:attribute name="AssessmentRegistrationRefId" use="optional" type="sif:IdRefType" />
  </xs:complexType>

  <xs:element name="StudentResponseSet" type="sif:StudentResponseSetType" />

</xs:schema>